Real-world emission factors of fifteen carbonyl compounds measured in a Hong Kong tunnel

作者: KF Ho , Steven Sai Hang Ho , Y Cheng , SC Lee , Jian Zhen Yu

DOI: 10.1016/J.ATMOSENV.2006.10.027

关键词:

摘要: Abstract Real-world vehicle emissions of carbonyls were determined in summer and winter 2003 at the Shing Mun Tunnel, Hong Kong. Fifteen carbonyl species have been analyzed this study. The total measured emission factors ranged from 21.7 to 68.9 mg veh −1  km among different measurement periods, with an average 35.8±11.9 mg veh . Higher found be associated a high proportion diesel-fueled vehicles. Total Diesel-fueled Vehicle (DV, 71.5 mg veh ) about 7 times higher than those Non-Diesel-fueled (NDV, 10 mg veh ). five largest DV factor were, decreasing order, formaldehyde (38.3 mg veh ), acetaldehyde (11.4 mg veh acetone (5.3 mg veh crotonaldehyde (5.2 mg veh benzaldehyde (2.0 mg veh These compounds together accounted for 87% sum all factors. For NDV, most abundant NDV tunnel (3.5 mg veh (1.8 mg veh methyl ethyl ketone (1.6 mg veh m,p -tolualdehyde (1.0 mg veh (mg veh They 85%

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